>> we can expect to hear a lot about the economy. half of this debate is dedicated to that issue alone. and also expect other domestic issues, including health care as the role of government. what is unclear is what we will hear about controversies, everything from mitt romney's 47% comment to the video that surfaced just last night about the president talking about race and hurricane katrina. >> going into this debate, what to the numbers look like? >> president obama has an eight- point lead in the battleground state of ohio. he is up, but he is in a statistical dead heat in other critical states like florida and virginia. we will see if tonight moves those numbers. >> month after month after month, both have been campaigning. how have they prepared specifically for these debates? >> president, as you know, just arrived in denver today. he was hunkered down in las vegas for the last couple of days, preparing. today is his 20th wedding anniversary. we will see how much time he gets to spend with his wife. most of that time has been